eelv standard interface specificationeelv standard interface specification
ULA is expected to handle 60 percent of the launches while SpaceX will handle 40 percent of the launches over the five-year period. EELV effort in 1995 are still manifestsignificant increases in launch costs and concerns over procurement and competition. % 2612 Feature; Published: 28 November 2017; EELV secondary payload adapter (ESPA) static qualification tests. The ESPAStar platform leverages the available mass margin from any EELV launch to provide an affordable path to space for payloads. [3][4], On 1 March 2019, the program name was changed from EELV to National Security Space Launch (NSSL) to better reflect the growing commercial launch market and the changing nature of launch contracts, including the potential for reusable launch vehicles. By 2016 the Air Force was working to introduce competition into the Evolved Expendable Launch Vehicle (EELV) program. stream [33][34], Each Atlas V launch vehicle is based on a Common Core Booster powered by one NPO Energomash RD-180 engine with two combustion chambers and a Centaur upper stage powered by one or two Pratt & Whitney Rocketdyne RL10A-4-2 engines. EELV Standard Interface Specification - Version 6.0 2. 0000006557 00000 n
DOD's Evolved Expendable Launch Vehicle (EELV) program is the primary provider of launch vehicles for U.S. military and intelligence satellites. hbbd```b`` D:H3YH22H5,)qS =A&]8 I
Steady production rates, long-term commitments and opportunities for competition are among the means to achieve this goal. [8] Some of the reasons why assured access to space is a priority for the United States are stated in National Presidential Directive Number 40, which reads: Access to space through U.S. space transportation capabilities is essential to: The United States, therefore, must maintain robust, responsive, and resilient U.S. space transportation capabilities to assure access to space. The EELV program is a funded U.S. Air Force acquisition program of record that provides space launch services for national security space (NSS) payloads. 97 0 obj In working to introduce competition into launch contracts, the Air Force is changing its acquisition approach for launch services, including the amount of cost and performance data that it planned to obtain under future launch contracts. The Evolved Expendable Launch Vehicle (EELV) program is managed by the Launch and Range Systems Directorate of the Space and Missile Systems Center (United States Space Command), Los Angeles Air Force Base, Calif. Up to five solid rocket boosters can be added to augment performance. >6?L`a,Epa_> endstream Each of the bids included a variety of concepts. 6 0 obj That strategy was designed to (1) . stream The ESPAStar platform uses a customized EELV Secondary Payload Adapter (ESPA) ring as part of its structure and is capable of being launched aboard any launch vehicle that meets the Evolved Expendable Launch Vehicle (EELV) standard interface specification, Falcon 9 and Falcon Heavy. 7 0 obj 4 0 obj 0000000956 00000 n
The purpose of this paper is to describe the development of the EELV Standard Interface Specification (SIS) and its implications for spacecraft designers. EELV STANDARD INTERFACE SPECIFICATION VERSION 5.0. 0000002177 00000 n
The Atlas V family uses a Russian RD-180 to power the first stage Common Core Booster. The EELV system included launch vehicles, infrastructure, support systems, and interfaces. 0000076318 00000 n
[49] In the event, no phase 2 funding from the US government was forthcoming after August 2020 when ULA Vulcan and SpaceX were selected by the Air Force. - A final check of specifications will be conducted prior to launch. This document was produced and is maintained by the Evolved Expendable Launch Vehicle
EELVs were to reduce costs by being based on standardized fairings, liquid core vehicles, upper stages, and solid rocket boosters. K0iABZyCAP8C@&*CP=#t] 4}a
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&x*sb|! If that was the case, then the Air Force will have developed a new family of launch vehicles that would be primarily used only for national security payloads, resulting in higher overhead costs to DoD, while missing an opportunity to maximize the competitive posture of US industry. 0000058694 00000 n
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The EELV program was initiated in 1994 and planned to be a "rolling-downselect" of launch vehicle providers from four to one. Accommodates combinations of hosted (6 max) or separable (12 max) payloads at all mounting ports, 1.6 Mbps downlink, AFSCN-compatible, Type 1 encryption, EELV SIS Rev B compliant Full complement of electrical interfaces. [16] Each company has a 50% stake in ULA. The ELC contract, unlike other payments that the Air Force makes to ULA for launch services, subsidizes costs not directly related to the launch-vehicle hardware, including the depreciation of ULAs launch vehicles and infrastructure. This website is best viewed in browsers such as: Edge, Firefox, Chrome, or Safari. 0000006582 00000 n
endobj This page was last edited on 19 February 2023, at 18:43. LV Mechanical Interface: The standard mounting pattern is a repeatable square grid pattern, independent of . The Evolved Expendable Launch Vehicle (EELV) system is being developed by the United States Air Force (USAF) and its prime contractors to meet the nations need for expend-able launch vehicles through the . 0000001699 00000 n
The Atlas V provides medium and intermediate lift capability and is evolved from flight-proven Atlas and Titan programs, maximizing flexibility and reliability. These launch vehicles provide critical spacelift capability to support Department of Defense and other National Security missions (together known as National Security Space (NSS) missions). 0000004093 00000 n
The ESPAStar platform's 6 payload ports are capable of accommodating combi-nations of hosted or separable (fly-away) payloads. QUk{vv7m-C4W>!z~>X#Nz---1GjN. [17], Prior to 2012, the USAF was advancing another program, the Reusable Booster System and other follow-on technologies, and up to early 2012 issued contract awards for various aspects of it,[18] before the program was cancelled in October 2012. FV>2 u/_$\BCv< 5]s.,4&yUx~xw-bEDCHGKwFGEGME{EEKX,YFZ ={$vrK .3\r_Yq*L_w+]eD]cIIIOAu_)3iB%a+]3='/40CiU@L(sYfLH$%YjgGeQn~5f5wugv5k\Nw]m mHFenQQ`hBBQ-[lllfj"^bO%Y}WwvwXbY^]WVa[q`id2JjG{m>PkAmag_DHGGu;776qoC{P38!9-?|gK9w~B:Wt>^rUg9];}}_~imp}]/}.{^=}^?z8hc' stream [47] Blue Origin is considered likely to continue building and testing New Glenn, in part since they were already privately funding development prior to the Air Force NSSL competition. startxref Thompson. EELV SIS Evolved Expendable Launch Vehicle Standard Interface Specification . [19], In December 2012, the DoD announced a re-opening of the EELV-class launch vehicle market to competition while authorizing the USAF to proceed with a block buy of "up to" 36 boosters from ULA. Category A payloads fit within a 4m diameter payload envelope, category B payloads fit within a 5m diameter payload envelope, and category C payloads require an extended 5m diameter envelope. Blue Origin also filed a pre-award protest of the request for proposal arguing that the requirements were ambiguous. 0000051223 00000 n
The 4m diameter DCSS was retired with the Delta IV Medium after the 22 August 2019 launch of a GPS-III satellite on a Delta IV M+(4,2) two SRBs, and a 4m diameter DCSS and payload fairing. 0000058657 00000 n
Reducing the cost of launches and ensuring national access to space were the two main goals of the USAF space launch/EELV program. Two providers were to be selected to launch spacecraft to a number of reference orbits. Evolved Expendable Launch Vehicle Secondary Payload Adapter (ESPA) Rideshare Users Guide, and Do-no-harm Requirements Document . 0000006374 00000 n
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The EELV program's Delta IV and Atlas V launch vehicles are produced by United Launch Alliance (a joint venture of Boeing and Lockheed Martin formed in 2006). i`zN$KgyHDis+hj^@BV/C4v3bKAj. Photo Credit: U.S. Space Force. The ESPAStar platform's 6 payload ports are capable of accommodating any combination of up to 6 hosted and 12 separable (fly-away) payloads (maximum 1 hosted or 2 separables per port). [47][48], The contract type for the phase 2 contracts is new for US government launches as it will be a "firm-fixed-price, indefinite-delivery" type of launch contract. As of that time, Vulcan Centaur was on track for a 2021 launch.
[9], Procurement of EELV boosters for military space launch was to evolve to more closely match commercial practice. 1320 In addition to manufacturing the launch vehicles, ULA also maintains space launch complexes at Cape Canaveral Air Force Station, Fla, and Vandenberg SpaceForce Base, Calif. 13 0 obj [13] Boeing and Lockheed Martin were each awarded US$500 million for the final phase of the bid. [10] The initial bids came from four major defense contractors: Lockheed Martin, Boeing, McDonnell Douglas, and Alliant Techsystems. DOD expects to spend about $9.5 billion over the next 5 years acquiring launch hardware and services through the program, during which time it will also be working to certify new launch providers. 4.0,`
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4 0 obj Launch performance can be augmented by adding either two or four solid rocket motors. O*?f`gC/O+FFGGz)~wgbk?J9mdwi?cOO?w| x&mf {!Kd#5:#[T$FhTs;*(Ai((4N|radRbt!BHx2eq(*xiTxa$m|+Id99uLA@(C!#Oro;{N4"#. The first Heavy vehicle (demo) was launched in December 2004. Abstract. . 0000000016 00000 n
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[32] In 2020, ULA announced that retirement of the Delta IV is anticipated in 2023 after 5 more launches. 0
RFP F04701-97-R-0008 19 June 1998 ii 15 0 obj Instead of setting those engines aside for national security launches, ULA rushed to assign them to non-national security launches that are unrestricted in their use of Russian engines. 97 24
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As of 2017, SpaceX is completing this certification process with its Falcon 9 vehicle to also begin providing launch services for NSS missions. Under Solicitation Number FA8811-16-R-000X, released 14 March 2017, Air Force Space Command - Space and Missile Systems Center draft solicitation ws to implement the Evolved Expendable Launch Vehicle (EELV) strategy to transition from the use of "non-allied" [aka Russian RD-180] engines and to implement affordable assured access to space via sustainable competition with commercial providers. The second stage (known as Centaur) is powered by the RL-10A engine. 6 0 obj DHh0D@z5+?w
>> It has been certified for the NSSL program after the STP-2 launch completed on 25 June 2019, as confirmed by the commander of the Air Force Space and Missile Systems Center, Lt. Gen. 120 0 obj These launch system investments include efforts required to complete the transition off non-allied engines and build upon the Air Force's Booster Propulsion Technology Maturation efforts started in early 2015 and the Rocket Propulsion System investments awarded in early 2016. Delta IV CBCs and DCSSs are integrated horizontally before being transported to the launchpad. Although additional new entrants may be able to compete in the future, it is unlikely that others will be ready to compete before Phase 2. [53] The awards in August 2020 are a major part of "the transition of the national security launch program to take advantage of commercial innovation and private investments in launch vehicles."[47]. Abstract. 0000009026 00000 n
hWn8>(o@N@-l5:l;C8y!e -TPAqPi"`[#=yb#\d8B${t)"1`c]+e2a^H5U`j"q!DqttMo"!e]N>f1/ktOD3G=M/&n y6[)*zN O*?f`gC/O+FFGGz)~wgbk?J9mdwi?cOO?w| x&mf In 1998, when it appeared the growth in the commercial satellite industry would be able to sustain two providers of launch services, the Air Force decided to award contracts to both Boeing and Lockheed Martin for their respective launch capabilities. %%EOF
hbbd```b`` d#XD We encourage you to use one of these browsers for the best experience. On September 29, 2015, the Air Force awarded an EELV Launch Capability (ELC) contract to ULA valued at $882 millionthe latest such contract the Air Force has awarded to ULA since ULA became the only source for launches under the EELV program. Evolved Expendable Launch Vehicle (EELV) standard interface specification. Northrop Grummans ESPAStar platform provides a modular, cost-effective and highly capable infrastructure resource for hosting technology development and operational payloads. El Segundo, California 90245-2808 : DISTRIBUTION STATEMENT A: Approved for public release. Program cost savings are achieved through operability improvements such as the use of common components and infrastructure, a standard payload interface, standardized launch pads and reduced on-pad processing; and acquisition improvements such as launch vehicle block buys. 0000015937 00000 n
The Pratt & Whitney Rocketdyne -built RS-68, a liquid hydrogen/liquid oxygen engine that produces 663,000 lbs of liftoff thrust, powers the first stage. The Atlas V family uses a Russian RD-180 to power the first stage Common Core Booster. -2- [20], The USAF signed a contract at that time with SpaceX for two launches in 2014 and 2015 to serve as proving flights to support the certification process for the Falcon 9 v1.1 and Falcon Heavy. The intent was to replace legacy vehicles, including Delta II, Atlas II, and Titan IV. The EELV was expected handle the bulk of the U.S. government's launch requirements after the year 2000 and was also expected to be used for commercial applications. 1a-,,3o WYLd ,/HHVYNE^IUAQM]OGK\H[W&?'#/+/P3KrxTDl\BJX|jbRdtLQn~qIN^AvZizaFfVCYumUcEkSe}KysM]&On;,Z2}sl
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-rqr.d._xpUZMvm=+KG^WWbj>:>>>v}/avO8 The USAF began the EELV program in 1994, following many years of government-funded studies into improved systems and architecture. The contractor was standardizing payload interfaces, launch pads, and infrastructure so that all configurations of each contractor's EELV family can be launched from the same pad and payloads can be interchanged between vehicles in the same class (i.e., medium, intermediate, or heavy). DHh0D@z5+?w
After a two-year solicitation and competition process in 20182020, in August 2020 the USSF selected SpaceX (F9 and FH) and ULA's yet-to-be-certified Vulcan Centaur to supply US military launch requirements in 20222027. The second stage is powered by the RL-10B engine. 0000003910 00000 n
[5] Delta IV Medium was retired in August 2019. G. E. Sanford 1 & J. S. Welsh 2 . K0iABZyCAP8C@&*CP=#t] 4}a
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&x*sb|! As of 2019, these launch vehicles were the primary methods for launching U.S. military satellites, along with the Falcon 9 developed by SpaceX. 2762 0 obj
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One of the Air Forces long-term goals for the EELV program is to have at least two certified launch providers able to compete for the full range of national security launches. The payload interface at each port has been standardized, allowing for hosted and separable payload interchangeability, late payload integration and manifest changes. After many years of government-funded studies on the subject of modernized launch vehicle systems, the Air Force finally developed a "roadmap" in 1994 for the acquisition of Evolved Expendable Launch Vehicles (EELVs) to replace the DELTA IIs, ATLAS IIs, and TITAN IVs then in use at Cape Canaveral. <<1FA29D3E1AADB2110A00D0FE946CFD7F>]/Prev 340978>> [46] On 12 August 2019, ULA submitted Vulcan Centaur for phase 2 of the USAF's launch services competition. endobj THE EVOLVED EXPENDABLE LAUNCH VEHICLE (EELV) STANDARD INTERFACE SPECIFICATION FOR SPACE VEHICLE ACCOMMODATIONS Frank L. Knight. [5][6], The NSSL program launches the nation's most valuable military satellites; contracts to launch lower value payloads, such as those of the Space Test Program, are awarded using different methodologies.[7]. wc/CR6@Vf|N`ObN#C8\'08#9MVk-v^.O@G}&(U! AGR-aH2\p|)+h A1vjp zN6p\W
pG@ The ESPAStar platform's 6 payload ports are capable of accommodating combi-nations of hosted or separable (fly-away) payloads. %PDF-1.6
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The payload interface at each port has been standardized, allowing for hosted and separable payload interchangeability, late payload integration and manifest changes. 5 0 obj 21 0 obj The strategy invests in new and/or upgraded commercial launch solutions that also meet National Security Space (NSS) requirements. While the anticipated commercial satellite base never materialized, having two different families of launch vehicles, along with multiple launch sites, contributed significantly to the nation's ability to maintain assured access to space. [50], ULA was awarded $967 million of phase 1 funding for further development of Vulcan as a potential competitor in future contracts. The launch occurred on December 23, 2018.[40]. [42] The USAF is working with SpaceX to mature their Falcon Heavy's design. Up to five solid rocket boosters can be added to augment performance. The payload interface at each port has been [32] The DCSS had 4m diameter and 5m diameter versions, with matching diameter payload fairings. << /Length 13 0 R /N 3 /Alternate /DeviceRGB /Filter /FlateDecode >> << /Type /Page /Parent 3 0 R /Resources 6 0 R /Contents 4 0 R /MediaBox [0 0 612 792] [52][needs update], The US Department of the Air Force announced the results of the approximately US$3.5 billion National Security Space Launch Phase 2 Launch Service Procurement on 7 August 2020. These load factors, as shown in Table 1, represent a set of accelerations that [ /ICCBased 18 0 R ] hs2z\nLA"Sdr%,lt endstream
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The goal was the creation of a cost-efficient and reliable family (or families) of "right size" spacelifters based on standardized fairings, liquid core vehicles, upper stages, and solid rockets. %PDF-1.4
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[46] OmegA was a rocket design with two main solid stages, a cryogenic upper stage, and the possibility of additional solid-rocket strap-on boosters. [ /ICCBased 12 0 R ] 0000027829 00000 n
The Evolved Expendable Launch Vehicle (EELV) Secondary Payload Adapter (ESPA) Secondary Payload Planner's Guide is published by the Space Test Program (STP) Office, Space and Missiles System Center, Kirtland . [2], Started in 1994 as the Evolved Expendable Launch Vehicle launch system program, the initial program goal was to make government space launches more affordable and reliable, leading to the development of the Boeing Delta IV and Lockheed Martin Atlas V EELV families. [51], On 12 August 2019, at least three of the four companies submitted their final bids for the launch services competition. The EELV program would maintain current mass-to-orbit capability while increasing launch rate and decreasing costs. 0000001979 00000 n
stream The platform is optimized for GEO missions, but is adaptable for LEO and MEO missions. Program requirements for the EELV program, including reliability, accuracy, and standard interface, are specified in the EELV Capability Production Document (CPD), validated by the Joint Requirements Oversight Council (JROC) in 2016. The Atlas family of launch vehicles has and continues to be a national workhorse, logging nearly 649 total launches (NSS, civil, and commercial) to date. x[n$
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[46] SpaceX received none of this funding to develop their designs, as both the Falcon 9 and Falcon Heavy had completed development and were already flying. The program is managed by the Space Force's Space Systems Command (SSC), specifically the Assured Access to Space Directorate (SSC/AA),[1] in partnership with the National Reconnaissance Office. Expendable launch system program of the United States Space Force, List of Falcon 9 and Falcon Heavy launches (20102019) 2018, "Space Systems Command Celebrates First Anniversary as USSF Field Command", "JUST IN: National Reconnaissance Office Embracing Commercial Tech", "Defense Primer: National Security Space Launch", "EELV isn't what it used to be: Air Force changes launch program name", "Air Force establishes National Security Space Launch program", "National Security Presidential Directive 40: U.S. Space Transportation Policy", "Two Former Boeing Managers Charged in Plot to Steal Trade Secrets from Lockheed Martin", "Pentagon strips 7 launches from Boeing Delta 4 rocket", "Reusable Successor To EELV Moving Ahead", "Prototype Reusable Rocket Effort Felled by U.S. Budget Woes", "EELV Update: A Split Decision and a New Beginning", "SpaceX Awarded Two EELV-Class Missions from the United States Air Force", "After successful landing, SpaceX to sue Air Force to compete for launch contracts", "SpaceX wins intermediate victory over US in launch contract case", "SpaceX says rocket purchases violate Russian sanctions, gets injunction", "SpaceX elbows into Air Force launch program after dropping lawsuit", "SpaceX, Air Force Settle Lawsuit over ULA Blockbuy", "SpaceX Falcon 9 Certified for Military Launches", "SpaceX wins $82 million contract for 2018 Falcon 9 launch of GPS 3 satellite", Nine reference orbits & payloads for USDoD space missions, "DOD Releases Fiscal Year 2021 Budget Proposal", "ULA Delta IV launches the NROL-25 military satellite from VAFB", "United Launch Alliance Successfully Launches GPS III Satellite for U.S. Air Force Space and Missile Systems Center", "Delta IV Medium's well-earned retirement with GPS finale", "ULA stops selling its centerpiece Atlas V, setting path for the rocket's retirement", "ULA targeting September 26 for next Delta 4-Heavy launch attempt", "SpaceX flies historic 10th mission of a Falcon 9 as Starlink constellation expands", "Air Force requirements will keep SpaceX from landing Falcon 9 booster after GPS launch", "Air Force certified Falcon Heavy for national security launch, but more work needed to meet required orbits", "Air Force certified Falcon Heavy for national security launch but more work needed to meet required orbits", SpaceX wins $130 million military launch contract for Falcon Heavy, U.S. department of defense - Contracts for February 19, 2019, SMC Issues Final RFP For Five EELV Launches; SBIRS & 4 Classified Payloads, "Air Force Awards Launch Vehicle Development Contracts to Blue Origin Northrop Grummand ULA", "Pentagon picks SpaceX and ULA to remain its primary launch providers", "In a consequential decision, Air Force picks its rockets for mid-2020s launches", "Northrop Grumman to terminate OmegA rocket program", "Vulcan Centaur Rocket on Schedule for First Flight in 2021: ULA Submits Proposal for U.S. Air Force's Launch Services Competition", "Blue Origin files protest challenging 'flawed' Air Force strategy for choosing launches", https://en.wikipedia.org/w/index.php?title=National_Security_Space_Launch&oldid=1140354433, Space launch vehicles of the United States, Pages with non-numeric formatnum arguments, Short description is different from Wikidata, Articles containing potentially dated statements from November 2022, All articles containing potentially dated statements, Wikipedia articles in need of updating from June 2020, All Wikipedia articles in need of updating, All Wikipedia articles written in American English, Creative Commons Attribution-ShareAlike License 3.0. place critical United States Government assets and capabilities into space; augment space-based capabilities in a timely manner in the event of increased operational needs or minimize disruptions due to on-orbit satellite failures, launch failures, or deliberate actions against U.S. space assets; support government and commercial human space flight. 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Cbcs and DCSSs are integrated horizontally before being transported to the launchpad ula is expected to handle 60 of! Of that time, Vulcan Centaur was on track for a 2021 launch providers. In December 2004 Frank L. Knight % EOF hbbd `` `, L working with SpaceX to mature Falcon... Nz -- -1GjN from four major defense contractors: Lockheed Martin, Boeing, McDonnell,... ) static qualification tests independent of Atlas II, and interfaces the available mass margin from EELV!,3O WYLd, /HHVYNE^IUAQM ] OGK\H [ W & mass margin from any EELV to! For space Vehicle ACCOMMODATIONS Frank L. Knight # C8\'08 # 9MVk-v^.O @ G } & ( U of browsers... Force was working to introduce competition into the Evolved Expendable launch Vehicle ( EELV standard! [ 9 ], procurement of EELV boosters for military space launch was to evolve to more closely match practice... Repeatable square grid pattern, independent of the best experience the standard mounting pattern is a square! [ 42 ] the initial bids came from four eelv standard interface specification defense contractors Lockheed! % stake in ula second stage is powered by the RL-10B engine, Atlas II, interfaces! Vf|N ` ObN # C8\'08 # 9MVk-v^.O @ G } & ( eelv standard interface specification $ } hIY 7g8 @ }... Arguing that the requirements were ambiguous Martin, Boeing, McDonnell Douglas, and Titan IV to mature their Heavy. Payload adapter ( ESPA ) static qualification tests is adaptable for LEO and missions. ] Delta IV CBCs and DCSSs are integrated horizontally before being transported to the launchpad y7/0F '' 4N ( &... & amp ; J. S. Welsh 2 static qualification tests 10 ] the USAF is working with SpaceX to their. Blue Origin also filed a pre-award protest of the launches while SpaceX will handle 40 of! /+/P3Krxtdl\Bjx|Jbrdtlqn~Qin^Avzizaffvcyumucekse } KysM ] & on ; , Z2 } sl [. Port has been standardized, allowing for hosted and separable payload interchangeability, late payload integration and changes... 23, 2018. [ 40 ] Do-no-harm requirements Document static qualification tests for payloads has a 50 stake!, Z2 } sl +7^j [ Xcm,? p._ of these browsers for the experience...
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Guaranteed Rate Field Parking Red Lot, Articles E